<!DOCTYPE html>
<html>
<head>
  <title></title>
</head>
<body>
<script type="text/javascript">
  let store = {
    msg: '学习已经很可怜了',
    logMsg () {
      let store = {
        msg: '你能不能长点心',
        logMsg: () => {
          let store = {
            msg: '给人多留点时间吧',
            logMsg: () => {
              console.log(this.msg)
            }
          }
          store.logMsg()
        }
      }
      store.logMsg()
    }
  }
  store.logMsg()
</script>
</body>
</html>